Specifications

16
Timed (T): Function Selector Knob: Timed (T)
Active Controls: IPAP, EPAP, BPM, %IPAP
Cycle to IPAP:
The interval timer triggers movement to the IPAP level based on the BPM setting. The %IPAP control
determines what percent of the respiratory cycle is spent at the IPAP level.
Cycle to EPAP:
Upon completion of the %IPAP period, the unit cycles to EPAP and remains there until the interval timer
triggers movement to IPAP.
Note: In the T mode, all movement between IPAP and EPAP is controlled by the timing intervals
determined by the BPM and %IPAP settings. Changes in delivered pressure levels do not
occur based on changes in patient flow.
Modes of Operation
V
P
est
5 cm H O
2
2 seconds
60 L/min.
2 seconds
60 L/min.
0
Example:
IPAP = 15 cm H
2
O
EPAP = 10 cm H
2
O
BPM = 10
Figure 4
See the Principles of Operation section for information on trigger and cycle criteria for assisted breaths.
Refer to Figures 4 and 5 for examples.
Note: When using a recorder, timer triggered breaths in the S/T mode can be identified by an event
marker on the V
est
channel. On the recording, there is a deflection below baseline at the initiation
of the inspiratory flow.
•
Example:
IPAP = 15 cm H
2
O
EPAP = 4 cm H
2
O
BPM = 12
Figure 5
V
P
est
5 cm H O
2
2 seconds
60 L/min.
2 seconds
60 L/min.
0